变压器一次绕组加额定电压,二次绕组带负载运行时,()将随负载电流大小和负载功率因数大 发布时间:2017-07-05 01:14 │ 来源:www.tikuol.com 题型:单项选择题 问题: 变压器一次绕组加额定电压,二次绕组带负载运行时,()将随负载电流大小和负载功率因数大小的改变而改变A.一次电压大小 B.二次电压大小 C.二次绕组电阻大小
题型:单项选择题 —Let's go to school at once. We'll be late. —_____, we still have 20 minutes left.A. No problem B. Not hurry C. Take it easy D. That's all right 查看答案